Cd4051 Multiplexer Tutorial Is Here!

Projects and Examples
5

With the current json implemenations of pd2dsy, and the update staged for release on oopsy you can do the following, which is copied from the daisy field.json file:

"parents":
  "pot_mux": {
    "component": "CD4051",
    "mux_count": 8, // the number of pots connected
    "pin": {
      "adc": 16,  // the ADC input pin
      "sel0": 21, // The SEL0 digital output pin
      "sel1": 20, // The SEL1 digital output pin
      "sel2": 19  // The SEL2 digital output pin
    }
  }
},
"components": {
  "knob1": {
    "component": "CD4051AnalogControl",
    "index": 0, // which analog input pin on the CD4051 to read
    "parent": "pot_mux"
  },
  "knob2": {
    "component": "CD4051AnalogControl",
    "index": 3, // which analog input pin on the CD4051 to read
    "parent": "pot_mux"
  }
},

edit: updated to be more complete (using parents and components relationship).

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